Added some get functions for the member variables in ConfigRange.
These were needed for the string conversions in the ConfigStorageManager class.

Signed-off-by: Sophie <sophie@sophie-Inspiron-1564.(none)>
Merge branch 'ConfigSystem' of https://github.com/nubots/robocup into ConfigSystem

Conflicts:
	ConfigManager/ConfigRange.h

Signed-off-by: Sophie <sophie@sophie-Inspiron-1564.(none)>